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152 lines
4.6 KiB
152 lines
4.6 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2011.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/*
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SideShow Class demonstration application. This give a reference
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for implementing Microsoft SideShow compatible devices in an
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embedded environment. SideShow allows for gadget data displayed
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on a Windows Vista or later machine to also be displayed on an
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externally connected interactive display. Upon enumeration, this will
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appear as a new SideShow device which can have gadgets loaded onto
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it.
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Note that while the incoming content is buffered in packet struct
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form, the data is not actually displayed. It is left to the user to
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write sufficient code to read out the packed data for display to a
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screen.
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Installed gadgets can be accessed through the InstalledApplications
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array, with entries that have their InUse flag set being active. As
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only the active content is displayed on the device due to memory
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constraints, new content can be requested as needed.
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*/
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#include "Sideshow.h"
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/** Main program entry point. This routine contains the overall program flow, including initial
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* setup of all components and the main program loop.
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*/
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int main(void)
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{
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SetupHardware();
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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sei();
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for (;;)
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{
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SideShow_Task();
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Disable clock division */
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clock_prescale_set(clock_div_1);
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/* Hardware Initialization */
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LEDs_Init();
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USB_Init();
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SerialStream_Init(9600, false);
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}
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void EVENT_USB_Device_Connect(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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void EVENT_USB_Device_Disconnect(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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void EVENT_USB_Device_ConfigurationChanged(void)
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{
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bool ConfigSuccess = true;
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/* Setup Sideshow Data Endpoints */
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ConfigSuccess &= Endpoint_ConfigureEndpoint(SIDESHOW_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
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SIDESHOW_IO_EPSIZE, ENDPOINT_BANK_SINGLE);
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ConfigSuccess &= Endpoint_ConfigureEndpoint(SIDESHOW_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
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SIDESHOW_IO_EPSIZE, ENDPOINT_BANK_SINGLE);
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/* Indicate endpoint configuration success or failure */
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LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
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}
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void EVENT_USB_Device_ControlRequest(void)
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{
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switch (USB_ControlRequest.bRequest)
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{
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case REQ_GetOSFeatureDescriptor:
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if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_VENDOR | REQREC_DEVICE))
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{
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const void* DescriptorPointer;
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uint16_t DescriptorSize = USB_GetOSFeatureDescriptor(USB_ControlRequest.wValue,
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USB_ControlRequest.wIndex,
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&DescriptorPointer);
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if (DescriptorSize == NO_DESCRIPTOR)
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return;
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Endpoint_ClearSETUP();
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Endpoint_Write_Control_PStream_LE(DescriptorPointer, DescriptorSize);
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Endpoint_ClearOUT();
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}
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break;
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}
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}
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void SideShow_Task(void)
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{
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/* Device must be connected and configured for the task to run */
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if (USB_DeviceState != DEVICE_STATE_Configured)
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return;
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/* Select the SideShow data out endpoint */
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Endpoint_SelectEndpoint(SIDESHOW_OUT_EPNUM);
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/* Check to see if a new SideShow message has been received */
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if (Endpoint_IsReadWriteAllowed())
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{
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/* Process the received SideShow message */
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Sideshow_ProcessCommandPacket();
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}
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}
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